Door-operated switch



Patented June 11, 1929.

JOSEPH ERNEST BEAUCHAMP, F MONTREAL, QUEBEC, CANADA.

DOOR-OPERATED SWITCH.

Application filed March 12, 1928.

The present invention relates to improvements in a Door operatedelectric switch or the like, which is hereina't'ter lull described andclaimed, and is illustrated in the accompanvinedrawings, in which Figure1 a longitiulinal sectional view through a switch according to theinvention, when in its non-operative position.

Figure 2 is a similar view to Figure 1, when the switch is in itsoperative positon.

Figure 3 is a longitudinal sectional plan view of the switch, and,

Figure 4 is an end view of the door operated pawl.

Like numerals of reference indicate cor responding parts in each figure,

Referring to the drawing 1 is the switch base member having on one sidethereof the recessed member 2 and on the opposite side the outwardlyprojecting brackets 3 and the lugs t. In the brackets 3 is mounted theswitch element 5, of the well known pull chain type, and. (3 is theusual pull chain. lninnediatcly bel w said switch element, and inalinement therewith, is provided a bracket 7 preferably integral withsaid base 1 and at right angles thereto. On said bracket 7 is pivotallymounted the pawl S which consists of an elongated member having asemi-circular head 9 provided with a circumferential recess 10, in whichits pull chain 6 is secured by means of the pin 11.

In one side of the recessed member 2, may be provided an elbow ortubular extension 12, through which the electrical conductors 13 and l tproject and are connected to their respective poles l and 16 in theswitch 5.

The pawl 8 is actuated by a lag 17, which is secured upon the upper edgeoi the door 18, (shown in dot and dash lines in the drawings) which uponopening the door, will cause the pawl 8 to be tilted, as disclosed inFigure Serial No. 260,821.

2 of the drawings, thus pulling the chain 6 and operating the switch tocomplete an electric circuit, which will light an electric lamp. Tobreak the circuit. the door must be opened a second time, which causesthe pawl. S to pull a second time. the pull chain (3. The chain (5 beinglocated in the recess in the head 9 of the pawl S, thus prevented fromfallingotl' said pawl. \Vhcn closing the door, the lug 17 pushes thepawl backwards, without how- 0 "er, operating the pull chain 6.

The switch element 5 is covered by a casing 19 which is provided with aslot 20 through which the pawl 8 projects, and suitably secured to thebase, thus pr viding a switch of neat appearance, and cheap tomanufacture.

hat I claim as my invention is A device of the character. described,adapted to be operated in combination with a door, comprising; a basemen'iber, brackets projectinn outwardly from said base, a switch elementof the pull chain type secured in said brackets and a pull chainprojecting therefrom, a bracket projecting; outwardly .trom said baseand located below the aforesaid brackets, a pawl pivotally mounted uponsaid bracket, said pawl having a scum-circular heaiil provided with acircumferential recess in which is secured the tree end of said pullchain, means to electrically connect said switch element to an electriccircuit, a cover over said swi 'ch element having a slot throimjh whichprojects the lower end of said pawl, and means adapted to be secured tosaid door whercbv upon opening said door, said pawl will be operated topull a chain, substantially as described.

Signed at ltlontrcal, Quebec, Canada, this 18th day of October, 1927.

JOSEPH ERNEST BEAUCHAMP.

